| Customization: | Available |
|---|---|
| Customized: | Customized |
| Certification: | CE, ISO, RoHS |
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Our heat exchangers are used in a variety of industries including petroleum, utility, paper, chemical, rendering and metals. Applications are as diverse and demanding as the oil fields of Alaska, off-shore platforms from the Gulf of Mexico to the South China Sea, refineries in Canada and fermentation plants in Mexico. Kennedy heat exchangers are operating in applications as exotic as dual condenser / reboilers for uranium fuel enrichment processes and as common as product coolers and glycol to glycol exchangers.
When it comes to shell and tube heat exchangers, Kennedy Tank has earned a reputation for quality, dependability and value. Our heat exchangers are designed to satisfy the rigid requirements of the toughest industries, including:
Condensers
Evaporators
Glycol to Glycol exchangers
Heaters
Interchangers
Product coolers
Reactors
Sandblasting
Painting
Passivation
Post-Weld Heat Treatment
Radiography
Helium Testing
API 660
ASME code
TEMA standards
Leak Testing
Pressure Testing
QC Stamps on all welded / processed material
Liquid Penetrant Testing
Magnetic Particle Testing
Certified Welding Inspection
Certified Radiographic Interpretation
NACE Coating Inspection
Multiple Integrity Tests Performed On All Exchangers
Heat exchangers are designed according to the specific requirements of where they'll be used. Different processes bring different challenges, so it's essential to have a suitable heat exchanger that performs well under the pressures of the specific process.
When designing, we consider the specific goals and challenges of your process. From this, we then design the heat exchanger taking into account:
If you'd like to discuss your project, simply get in touch with Sterling TT.
Selecting the materials used in a heat exchanger is a pivotal part of the design. They need to be heat conductive whilst withstanding any corrosive properties of the mediums involved. Some materials will wear or get dirty faster than others, so upkeep and durability is another consideration.
The vast majority of heat exchangers rely on conductive metals. For example, copper and steel are popular choices. However, they're only suitable for applications up to a certain temperature and where the fluids involved won't react with the metals.
While conductive metals are most common, in some applications ceramics or especially designed plastic polymers can be a better alternative.
The fluids used in the process are an important element. We design heat exchangers suitable to have seawater, oil, water or water-glycol as the coolant. We select the best option according to both your resources and the other medium involved.
We can also design heat exchangers for use with more corrosive fluids such as acids, chlorinated salt water and other chemicals. If these are being used, we carefully consider the appropriate materials to prevent corrosion.
Air is also commonly used in heat exchanger systems. It has a low thermal conductivity and, therefore, often works well with an extended surface heat exchanger such as our enhanced fin heat exchanger.
For heat exchangers in devices around the home, they'll be installed during the manufacturing or installation of the item.
However, with industrial heat exchanges, installations can be more complex as the devices are often bigger or involve more challenging mediums.
An experienced engineer installs the heat exchangers that Sterling TT designs and manufacturers. This ensures that they are correctly installed and are functioning effectively.
Maintaining a heat exchanger well helps to increase its lifespan. However, this starts in the design process.
When we design a heat exchanger, we take into account the materials and any corrosion or build-up that might occur, as well as the placement of the heat exchanger and whether it is easily accessible for regular maintenance. We also consider how essential it is to your process and whether maintenance will lead to downtime.
From this, we design the heat exchanger to best suit your maintenance capabilities and recommend the appropriate maintenance schedule, such as cleaning.
We have a full aftercare service to ensure your heat exchanger lasts as long as possible.
CLASSIFICATION ACCORDING TO NUMBER OF FLUIDS
Most processes of heating, cooling, heat recovery, and heat rejection involve transfer of heat between two fluids. Hence, two-fluid heat exchangers are the most common. Threefluid heat exchangers are widely used in cryogenics and some chemical processes (e.g., air separation systems, a helium-air separation unit, purification and liquefaction of hydrogen, ammonia gas synthesis). Heat exchangers with as many as 12 fluid streams have been used in some chemical process applications. The design theory of three- and multifluid heat exchangers is algebraically very complex and is not covered in this book. Exclusively, only the design theory for two-fluid exchangers and some associated problems are presented in this book
CLASSIFICATION ACCORDING TO CONSTRUCTION FEATURES
Heat exchangers are frequently characterized by construction features. Four major construction types are tubular, plate-type, extended surface, and regenerative exchangers. Heat exchangers with other constructions are also available, such as scraped surface exchanger, tank heater, cooler cartridge exchanger, and others (Walker, 1990). Some of these may be classified as tubular exchangers, but they have some unique features compared to conventional tubular exchangers. Since the applications of these exchangers 12 CLASSIFICATION OF HEAT EXCHANGERS { Some additional techniques for cleaning and mitigation of fouling are summarized in Section 13.4. are specialized, we concentrate here only on the four major construction types noted above. Although the "-NTU and MTD methods (see end of Section 3.2.2) are identical for tubular, plate-type, and extended-surface exchangers, the influence of the following factors must be taken into account in exchanger design: corrections due to leakage and bypass streams in a shell-and-tube exchanger, effects due to a few plates in a plate exchanger, and fin efficiency in an extended-surface exchanger. Similarly, the "-NTU method must be modified to take into account the heat capacity of the matrix in a regenerator. Thus, the detailed design theory differs for each construction type and is discussed in detail in Chapters 3 through 5. Let us first discuss the construction features of the four major types.
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